(19)

(11)

EP 4 138 628 A1

(12)

(43) Date of publication: 01.03.2023 Bulletin 2023/09 (21) Application number: 21725023.2 (22) Date of filing: 21.04.2021

(51) International Patent Classification (IPC):  A61B 1/00(2006.01) A61B 1/005(2006.01) A61M 25/00(2006.01) (52) Cooperative Patent Classification (CPC): A61B 1/00066; A61B 1/00103; A61B 1/0011; A61B 1/00128; A61B 1/0052 (86) International application number: PCT/DK2021/050116 (87) International publication number: WO 2021/213599 (28.10.2021 Gazette 2021/43)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 24.04.2020 DK PA202070257 (71) Applicant: Ambu A/S 2750 Ballerup (DK)	(72) Inventors: GRØNDAHL, Jesper 3500 Værløse (DK) THOMSEN, Bjørn Bruhn 3460 Birkerød (DK) (74) Representative: AWA Denmark A/S  Strandgade 56 1401 Copenhagen K 1401 Copenhagen K (DK)